Supabase Auth
Auth Provider
Firebase Auth
Auth ProviderSupabase Auth vs Firebase Auth
Supabase Auth and Firebase Auth are both popular choices, but they serve different needs. Supabase Auth is a Auth Provider with a traditional, manual approach to building, while Firebase Auth is a Auth Provider that prioritises developer or designer control.
Below you'll find a side-by-side breakdown of detection signals, AI scores, and technical fingerprints — plus our honest take on which builder wins for different use cases.
How we detect Supabase Auth vs Firebase Auth — see our methodology: AI Influence Score calculation, evidence tiers, and fingerprint signal types.
Side-by-Side Comparison
| | |
|---|---|---|
| Category | Auth Provider | Auth Provider |
| AI Score | 10/100 — Unknown | 10/100 — Unknown |
| Detection Signals | 3 patterns | 5 patterns |
| Script Detection | 1 patterns | 3 patterns |
| CDN Detection | — | — |
| Header Detection | — | — |
| Sites Detected | No data yet | No data yet |
| Best For | Professional websitesTry Supabase Auth → | Professional websitesTry Firebase Auth → |
| Official Website | Visit | Visit |
Example Websites
Supabase Auth websites
Firebase Auth websites
Supabase Auth
Auth Provider
Supabase Auth is a auth provider with an AI Score of 10/100 (Unknown). Our detection engine uses 3 signal patterns to identify Supabase Auth-built sites.
Firebase Auth
Auth Provider
Firebase Auth is a auth provider with an AI Score of 10/100 (Unknown). Our detection engine uses 5 signal patterns to identify Firebase Auth-built sites.
Key Differences
- Both Supabase Auth and Firebase Auth are classified as Auth Provider tools, making them the most direct competitors in this comparison.
- Supabase Auth scores higher on AI involvement (10/100 vs 10/100 for Firebase Auth), meaning it relies more heavily on AI for site generation and content creation.
- Our detection engine identifies Supabase Auth using 3 fingerprint patterns and Firebase Auth using 5 patterns — more signals generally means more reliable detection.
Which Should You Choose?
Choose Supabase Auth if…
- You prefer a auth provider solution
- You want more manual control over the final output
- Supabase Auth's detection fingerprint of 3 signals means your site is reliably identifiable
Choose Firebase Auth if…
- You need a auth provider approach
- You prefer traditional building tools with predictable output
- Firebase Auth's ecosystem and community better match your team's existing workflow
Our Pick — Based on our detections
Supabase Auth
The most frequently detected auth provider in our scan database.
Was this helpful?
Check Which Builder Powers a Site
Curious if a website uses Supabase Auth or Firebase Auth? Scan it now — free.
Supabase Auth vs Auth.js / NextAuth
Supabase Auth vs Clerk
Supabase Auth vs Auth0
Supabase Auth vs Kinde
Supabase Auth vs Better Auth
Supabase Auth vs Stytch